Blue and violet defect levels mediated absorption hot spots in tapered ZnO nanorods toward improved photocatalytic activity

Blue and violet defect levels mediated absorption hot spots in tapered ZnO nanorods toward... Tapered ZnO nanorods have been synthesized and found to have efficient photocatalytic properties owing to a large number of native defect sites arising from oxygen non-stoichiometry. The estimation of defect states was carried out using photoluminescence spectroscopy. Visible light-driven photocatalytic activity of the prepared ZnO nanorods was evaluated by measuring the photodegradation of two widely used industrial organic pollutants, viz. rose bengal and methylene blue. Investigation of electric field profile of the tapered ZnO nanorods revealed the generation of huge absorption hot spots in the visible region, indicating better light trapping in tapered ZnO nanorods than the non-tapered structure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Springer Journals

Blue and violet defect levels mediated absorption hot spots in tapered ZnO nanorods toward improved photocatalytic activity

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Materials Science; Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics
ISSN
0022-2461
eISSN
1573-4803
D.O.I.
10.1007/s10853-017-1393-y
Publisher site
See Article on Publisher Site

Abstract

Tapered ZnO nanorods have been synthesized and found to have efficient photocatalytic properties owing to a large number of native defect sites arising from oxygen non-stoichiometry. The estimation of defect states was carried out using photoluminescence spectroscopy. Visible light-driven photocatalytic activity of the prepared ZnO nanorods was evaluated by measuring the photodegradation of two widely used industrial organic pollutants, viz. rose bengal and methylene blue. Investigation of electric field profile of the tapered ZnO nanorods revealed the generation of huge absorption hot spots in the visible region, indicating better light trapping in tapered ZnO nanorods than the non-tapered structure.

Journal

Journal of Materials ScienceSpringer Journals

Published: Jul 20, 2017

References

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